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Relationship between acute diarrhoea and low plasma levels of vitamin A and retinol binding protein

Relação entre diarréia aguda e baixos níveis plasmáticos de vitamina A e proteína carregadora de retinol (RBP)

Abstracts

The objective of this study was to assess vitamin A status and association between acute diarrhoea and plasma levels of vitamin A through cross-sectional comparison in children. Plasma vitamin A was measured by colorimetric method of Neeld & Pearson and RBP by radial immunodiffusion technique. Seventy eight children (aged 18-119 months), 26 with current history of diarrhoea and 52 children as controls (outpatient from the Santa Casa de Misericórdia Hospital in metropolitan area of São Paulo City, Brazil) were studied. Children with history of diarrhoea showed significant low levels (mean ± s.e.) as compared to controls, vitamin A (15.87 ± 1.4 µg/dl vs. 21.14 ± 1.15 µg/dl, p < 0.007) and RBP (1.70 ± 0.2 mg/dl vs. 2.52 ±0.11 mg/dl). Multivariate logistic regression adjusted by sex, age, nutritional status and mother education revealed association between diarrhoea and inadequate levels of vitamin A and RBP.

Diarrhoea; Vitamin A; RBP; Hypovitaminosis A


O objetivo deste trabalho foi avaliar o estado nutricional relativo a vitamina A e a associação entre diarréia e os níveis plasmáticos de vitamina A e RBP através de um estudo transversal. A vitamina A foi medida pelo método de Neeld & Pearson e RBP pela técnica de imunodifusão radial. Foram estudadas 78 crianças (com idades entre 18 e 119 meses), 26 com diarréia e 52 como controles, atendidas na consulta ambulatorial do Hospital Santa Casa de Misericórdia de São Paulo, da Cidade de São Paulo. As crianças com diarréia mostraram níveis significativamente mais baixos de vitamina A (15.87 ± 1.4 µg/dl vs. 21.14 ± 1.15 µg/dl, p< 0.007) e RBP (1.70 ± 0.2 mg/dl v.s 2.52 ± 0.11 mg/dl) quando comparadas com as do grupo controle. As análises de regressão logística mostraram associação entre diarréia e níveis inadequados de vitamina A e RBP ajustados pelo sexo, idade, estado nutricional e nível de educação materna.


TROPICAL GASTROENTEROLOGY

Relationship between acute diarrhoea and low plasma levels of vitamin A and retinol binding protein

Relação entre diarréia aguda e baixos níveis plasmáticos de vitamina A e proteína carregadora de retinol (RBP)

Gustavo Velasquez-MelendezI; Maria José RoncadaI; Julio ToporovskiII; Eliza T. OkaniI; Donald WilsonIII

IDepartment of Nutrition, School of Public Health, University of São Paulo, Brazil

IIDepartment of Pediatrics, Santa Casa de Misericórdia Medical School, São Paulo, Brazil

IIIDepartment of Medicine, University of Maringá, Paraná, Brazil

Correspondence to Correspondence to: Gustavo Velasquez-Meléndez Faculdade de Saúde Pública, Departamento de Nutrição Av. Dr. Arnaldo, 715 01246-904 Sao Paulo, SP, Brasil Fax 11-852.6748 E-mail: Melendez@usp.br

SUMMARY

The objective of this study was to assess vitamin A status and association between acute diarrhoea and plasma levels of vitamin A through cross-sectional comparison in children.

Plasma vitamin A was measured by colorimetric method of Neeld & Pearson and RBP by radial immunodiffusion technique.

Seventy eight children (aged 18-119 months), 26 with current history of diarrhoea and 52 children as controls (outpatient from the Santa Casa de Misericórdia Hospital in metropolitan area of São Paulo City, Brazil) were studied.

Children with history of diarrhoea showed significant low levels (mean ± s.e.) as compared to controls, vitamin A (15.87 ± 1.4 µg/dl vs. 21.14 ± 1.15 µg/dl, p < 0.007) and RBP (1.70 ± 0.2 mg/dl vs. 2.52 ±0.11 mg/dl).

Multivariate logistic regression adjusted by sex, age, nutritional status and mother education revealed association between diarrhoea and inadequate levels of vitamin A and RBP.

Keywords: Diarrhoea; Vitamin A; RBP; Hypovitaminosis A.

RESUMO

O objetivo deste trabalho foi avaliar o estado nutricional relativo a vitamina A e a associação entre diarréia e os níveis plasmáticos de vitamina A e RBP através de um estudo transversal.

A vitamina A foi medida pelo método de Neeld & Pearson e RBP pela técnica de imunodifusão radial.

Foram estudadas 78 crianças (com idades entre 18 e 119 meses), 26 com diarréia e 52 como controles, atendidas na consulta ambulatorial do Hospital Santa Casa de Misericórdia de São Paulo, da Cidade de São Paulo.

As crianças com diarréia mostraram níveis significativamente mais baixos de vitamina A (15.87 ± 1.4 µg/dl vs. 21.14 ± 1.15 µg/dl, p< 0.007) e RBP (1.70 ± 0.2 mg/dl v.s 2.52 ± 0.11 mg/dl) quando comparadas com as do grupo controle. As análises de regressão logística mostraram associação entre diarréia e níveis inadequados de vitamina A e RBP ajustados pelo sexo, idade, estado nutricional e nível de educação materna.

Full text available only in PDF format.

Texto completo disponível apenas em PDF.

ACKNOWLEDGEMENT

The Authors wish to thank the staff at the Department of Pediatrics of Santa Casa de Miscricórdia de São Paulo their cooperation; Levino Triebess from Hoechst do Brasil for donating RBP plates; Dina Yaeko Uchara and Dr. Francisco Carrazza both from Child Institute of School of Medicine USP for her technical assistance in RBP determinations and suggestions, respectively; Dr. Sergio Muñoz from Temuco University, Chile by suggestions in statistical analysis and Sueli Gimeno for critical review.

Recebido para publicação em 18/07/1996

Aceito para publicação em 25/09/1996

Sponsorship: CNPq (30072/94-3).

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  • Correspondence to:

    Gustavo Velasquez-Meléndez
    Faculdade de Saúde Pública, Departamento de Nutrição
    Av. Dr. Arnaldo, 715
    01246-904 Sao Paulo, SP, Brasil
    Fax 11-852.6748
    E-mail:
  • Publication Dates

    • Publication in this collection
      22 Sept 2006
    • Date of issue
      Oct 1996

    History

    • Accepted
      25 Sept 1996
    • Received
      18 July 1996
    Instituto de Medicina Tropical de São Paulo Av. Dr. Enéas de Carvalho Aguiar, 470, 05403-000 - São Paulo - SP - Brazil, Tel. +55 11 3061-7005 - São Paulo - SP - Brazil
    E-mail: revimtsp@usp.br